“Either the aliens don’t bother with us because we are simply too primitive or, if they do invade, it will be like Bambi vs Godzilla”

Dr Michio Kaku

Dr Kaku said: “What happens if we do encounter a hostile, advanced civilisation in space? Hollywood gets it all wrong.

“Hollywood assumes the aliens are maybe 100 years advanced than us and only if we had a secret weapon would could defeat the aliens.

“Wrong.

“Either the aliens don’t bother with us because we are simply too primitive or, if they do invade, it will be like Bambi vs Godzilla.

“They could be a thousand, a million years more advanced than us. Realise the universe is 13.7 billion years old – they could have weapons we couldn’t even conceive of.”

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NO CHANCE: Aliens would destroy us as easy as Godzilla, Dr Michio Kaku warns

Dr Kaku believes the only way of defending the planet would be to learn and adapt to their technology.

He added: “Look at how the Barbarians eventually defeated the Romans. The Barbarians didn’t have a secretive weapon by which they defeated Caesar and the Romans – they learned the technology from the Romans.

“We would have to probe them (aliens) to find out how advanced they really are. Do they have nuclear weapons? Or do they have a new generation of weapons we cannot even conceive of?

“However, if on the other hand they do attack we have to be prepared for the fact they are going to overwhelm us in the opening shots of a war.

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SPACE CONFLICT: Aliens could be a million years more advanced than humanity

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“I think for the most part alien civilisations that are a million years ahead of us have had a million years to sort out racial, sectarian and religious differences among themselves. For the most part they are going to be peaceful.

“We do have to plan for the day a few of them might be hostile.

“If we are faced with a common enemy in outer space it would help to unite the Earth.”